title: Atrial septal defect in adults > or =40 years old: negative impact of low arterial oxygen saturation.
mesh_terms: D000328:Adult; D000367:Age Factors; D001145:Arrhythmias, Cardiac / Q000453:epidemiology; D006328:Cardiac Catheterization; D016022:Case-Control Studies; D018572:Disease-Free Survival; D004417:Dyspnea / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006344:Heart Septal Defects, Atrial / Q000097:blood* / Q000453:epidemiology*; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000453:epidemiology; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D011379:Prognosis; D016016:Proportional Hazards Models; D016019:Survival Analysis; D013997:Time Factors
chemical_list: D010100:Oxygen